Get multiservice integration working

[lwoodson]

Lib currently does not work with the Bazaarvoice account where we use multiple-services. This PR fixes issues with the lib not supporting multiple service keys and gets the PagerDutyIT.java integration test working with our account. Previous output:

--> POST https://events.pagerduty.com/generic/2010-04-15/create_event.json http/1.1
Content-Type: application/json; charset=UTF-8
Content-Length: 111

{"service_key":"REDACTED","event_type":"trigger","description":"Client IT trigger #1","details":{}}
--> END POST (111-byte body)
<-- 400 Bad Request https://events.pagerduty.com/generic/2010-04-15/create_event.json (1540ms)
Server: nginx
Date: Wed, 14 Sep 2016 14:36:58 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
OkHttp-Sent-Millis: 1473863818416
OkHttp-Received-Millis: 1473863818506

{"status":"invalid event","message":"Event object is invalid","errors":["Service key is the wrong length (should be 32 characters)"]}

Current output after these changes

--> POST https://events.pagerduty.com/generic/2010-04-15/create_event.json http/1.1
Content-Type: application/json; charset=UTF-8
Content-Length: 123

{"service_key":"REDACTED","event_type":"trigger","description":"Client IT trigger #1","details":{}}
--> END POST (123-byte body)
<-- 200 OK https://events.pagerduty.com/generic/2010-04-15/create_event.json (2349ms)
Server: nginx
Date: Wed, 14 Sep 2016 15:30:19 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
OkHttp-Sent-Millis: 1473867019310
OkHttp-Received-Millis: 1473867019535

{"status":"success","message":"Event processed","incident_key":"4a29a86466504d82a70c30beaaa4e284"}
<-- END HTTP (98-byte body)
--> POST https://events.pagerduty.com/generic/2010-04-15/create_event.json http/1.1
Content-Type: application/json; charset=UTF-8
Content-Length: 178

{"service_key":"REDACTED","incident_key":"it-trigger-2","event_type":"trigger","description":"Client IT trigger #2","details":{"Type":"Integration test"}}
--> END POST (178-byte body)
<-- 200 OK https://events.pagerduty.com/generic/2010-04-15/create_event.json (230ms)
Server: nginx
Date: Wed, 14 Sep 2016 15:30:19 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
OkHttp-Sent-Millis: 1473867019543
OkHttp-Received-Millis: 1473867019771

{"status":"success","message":"Event processed","incident_key":"it-trigger-2"}
<-- END HTTP (78-byte body)
--> POST https://events.pagerduty.com/generic/2010-04-15/create_event.json http/1.1
Content-Type: application/json; charset=UTF-8
Content-Length: 165

{"service_key":"REDACTED","incident_key":"4a29a86466504d82a70c30beaaa4e284","event_type":"resolve","description":"Resolving #1","details":{}}
--> END POST (165-byte body)
<-- 200 OK https://events.pagerduty.com/generic/2010-04-15/create_event.json (225ms)
Server: nginx
Date: Wed, 14 Sep 2016 15:30:19 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
OkHttp-Sent-Millis: 1473867019774
OkHttp-Received-Millis: 1473867019999

{"status":"success","message":"Event processed","incident_key":"4a29a86466504d82a70c30beaaa4e284"}
<-- END HTTP (98-byte body)
--> POST https://events.pagerduty.com/generic/2010-04-15/create_event.json http/1.1
Content-Type: application/json; charset=UTF-8
Content-Length: 123

{"service_key":"REDACTED","event_type":"trigger","description":"Client ID trigger #3","details":{}}
--> END POST (123-byte body)
<-- 200 OK https://events.pagerduty.com/generic/2010-04-15/create_event.json (230ms)
Server: nginx
Date: Wed, 14 Sep 2016 15:30:20 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
OkHttp-Sent-Millis: 1473867020001
OkHttp-Received-Millis: 1473867020231

{"status":"success","message":"Event processed","incident_key":"958d06b3113b4a5698024f38c6face25"}
<-- END HTTP (98-byte body)
--> POST https://events.pagerduty.com/generic/2010-04-15/create_event.json http/1.1
Content-Type: application/json; charset=UTF-8
Content-Length: 173

{"service_key":"REDACTED","incident_key":"it-trigger-2","event_type":"trigger","description":"Client IT trigger #2 update 2","details":{"Hey":"Hey"}}
--> END POST (173-byte body)
<-- 200 OK https://events.pagerduty.com/generic/2010-04-15/create_event.json (239ms)
Server: nginx
Date: Wed, 14 Sep 2016 15:30:20 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
OkHttp-Sent-Millis: 1473867020233
OkHttp-Received-Millis: 1473867020472

{"status":"success","message":"Event processed","incident_key":"it-trigger-2"}
<-- END HTTP (78-byte body)
--> POST https://events.pagerduty.com/generic/2010-04-15/create_event.json http/1.1
Content-Type: application/json; charset=UTF-8
Content-Length: 152

{"service_key":"REDACTED","incident_key":"958d06b3113b4a5698024f38c6face25","event_type":"resolve","details":{"Hello":"World!"}}
--> END POST (152-byte body)
<-- 200 OK https://events.pagerduty.com/generic/2010-04-15/create_event.json (229ms)
Server: nginx
Date: Wed, 14 Sep 2016 15:30:20 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
OkHttp-Sent-Millis: 1473867020474
OkHttp-Received-Millis: 1473867020703

{"status":"success","message":"Event processed","incident_key":"958d06b3113b4a5698024f38c6face25"}
<-- END HTTP (98-byte body)
--> POST https://events.pagerduty.com/generic/2010-04-15/create_event.json http/1.1
Content-Type: application/json; charset=UTF-8
Content-Length: 116

{"service_key":"REDACTED","incident_key":"it-trigger-2","event_type":"resolve","details":{}}
--> END POST (116-byte body)
<-- 200 OK https://events.pagerduty.com/generic/2010-04-15/create_event.json (227ms)
Server: nginx
Date: Wed, 14 Sep 2016 15:30:20 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
OkHttp-Sent-Millis: 1473867020705
OkHttp-Received-Millis: 1473867020931

{"status":"success","message":"Event processed","incident_key":"it-trigger-2"}
<-- END HTTP (78-byte body)

[lwoodson]

Fixing style check errors